Can't say as I've noticed that as being a particular weakness for him, though you could put Lonergan behind the current wealth of centre halves at Juve and he'd look pretty assured from crosses.
I the big thing with Buffon for me is how long he's maintained that level, it's been over 15 years since he moved to Juve for ridiculous money and he's still there at the very top, though he did look like he'd lost it at one of the international tournaments a little while back. For all the talk of people like Neuer and Bravo being good with the ball at their feet I think this is something Buffon is often overlooked for, Juventus play the ball out from the back as well as anyone and you're not going to be able to do that without a keeper if you're keeper isn't up to it. He always seems remarkably calm these days too, remember watching them a few weeks ago where something deflected off Bonucci leaving him stranded but it went just wide, just gave his centre half a cheeky little wink and got on with it, no stress.
